sorry if i wasnt clear, ..issue started like this- was driving and it acted like i was running out of gas--had to keep pumping throttle to keep it running...got it home noticed gas running out of bottom of carb on to engine.so i took carb off(figured stuck float),cleaned carb and put back on ,stopped the gas from running out bottom but still ran the same. so figured carb issue,,,,took carb to dealer- they rebuilt,,,tested carb--said carb works perfect....so i put back on,,,still ran the same,,,still have to keep pumping throttle to stay running....so i changed plug,airfilter..still no change...the point im at now is..will start after pumping the throttle couple times,,,will idle.but as soon as i touch throttle it tries to die and back fires. but if i pump the throttle faster and faster it will pick up and run ????????